International Maths Olympiad Forum By SOF Olympiad Trainer - Page 694
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Yashashree Somdatta Kulkarni from Delhi Public School, Nashik
Subject :IMO    Class : Class 4

Ans 1:

Dheer Pandey from Sentia The Global School, Hyderabad
Class : Class 10
because its asking the unshaded figure not the shaded figure

Ans 2:

Arnav kaul from Chirec, Hyderabad
Class : Class 2
because it is unshaded not shaded.

Post Your Answer

Dhruv Garg from Dewan Public School, Meerut
Subject :IMO    Class : Class 5

Ans 1:

Shreya Shruti from Airforce school , Bengaluru
Class : Class 8
Bbbbbbbbbbb

Ans 2:

Dhriiti from BCM, Ludhiana
Class : Class 8
The answer is D only

Ans 3:

Saanvi Prasad from DPS Noida, Noida
Class : Class 5
Guys, it's d.. due to some explanations, I clicked b.... also, the people saying b are wrong as d showed up in my test results

Ans 4:

Harsh Sobti from the samhita academy, BLR
Class : Class 5
master admin answer

Ans 5:

Aniket Amit Kulkarni from Raghavdas Vidayala, Pune
Class : Class 5

Ans 6:

Anamkhan Mulla from Navrachna Sama, Vadodara
Class : Class 7

Ans 7:

Aniket Amit Kulkarni from Raghavdas Vidayala, Pune
Class : Class 5
why are you writing same sentence

Ans 8:

Shreya Shruti from Airforce school , Bengaluru
Class : Class 8
Plus there is no solution

Ans 9:

Aniket Amit Kulkarni from Raghavdas Vidayala, Pune
Class : Class 5
B is only the answer because it is symetry

Ans 10:

shubhavi Dhondge from NPS, Banagalore
Class : Class 9
b is the correct answer

Ans 11:

Vikruti Jain from Vibgyor Rise, Mumbai
Class : Class 9

Ans 12:

Anvi Sindhwani from BVM, NAGPUR
Class : Class 5
B is the correct answer and not D

Ans 13:

Anukarsh Dubey from Parvati Radhakrishna Formara school, Mathura
Class : Class 6
I thought A was the answer but the answer is d

Ans 14:

Aniket Amit Kulkarni from Raghavdas Vidayala, Pune
Class : Class 5
why are you silent you dont`t have head see properly then answer me

Ans 15:

shubhavi Dhondge from NPS, Banagalore
Class : Class 9
Even I think the answer is B

Ans 16:

Ahoraatra Mondal from GOKHALE MEMORIAL GIRLS' SCHOOL, HOWRAH
Class : Class 4
It's b guys it's b not d

Ans 17:

A Andrew from Lalaji Memorial Omega International School, Chennai
Class : Class 5
b is not the answer but d because in a symetry , both the sides should be opposite .

Ans 18:

adithya r from PSBB MS, Chenai
Class : Class 5
I THINK B IS THE ANSWER

Post Your Answer

Dhruv Garg from Dewan Public School, Meerut
Subject :IMO    Class : Class 5

Ans 1:

Shimoni Agarwal from delhi Public School, Moradabad
Class : Class 5

Ans 2:

Shimoni Agarwal from delhi Public School, Moradabad
Class : Class 5
sorry

Ans 3:

Pulin Sharma from Marble Arch School, Mumbai
Class : Class 6
According to me the correct answer to this question is D] Because it has a line of symmetry from top to bottom

Ans 4:

Adway Bachchan from Indian School Sohar, Sohar
Class : Class 8
answer is not b because the lines on top of the letter are horizontal

Ans 5:

Aniket Amit Kulkarni from Raghavdas Vidayala, Pune
Class : Class 5
But B answer is also the correct answer

Ans 6:

Shimoni Agarwal from delhi Public School, Moradabad
Class : Class 5
But B has slanting line of symmetry.The line of symmetry doesn't means only to be strategy

Ans 7:

Rushil Arora from DPS, New Delhi
Class : Class 5
the answer to this question can also be b because option b also has a line of symmetry

Ans 8:

saumit from Narayana E-techno, mumbai
Class : Class 5

Ans 9:

saumit from Narayana E-techno, mumbai
Class : Class 5
I say B is also a line of symmetry but the correct answer is D

Ans 10:

DIVISHA.AGARWAL from d.p.s. noida, Noida
Class : Class 5
D is the answer because it is straight but option B is not correct because over here it is slanting , and there is no such symmetry

Post Your Answer

Hrushikesh from , Nagpur
Subject :IMO    Class : Class 7

Ans 1:

RAHUL S ROY from ST.XAVIERS HIGH SCHOOL,VAPI, VAPI,GUJARAT
Class : Class 7
option a is correct as angle pqs is epual to angle qsa +angle ast (alternate interior angle)=70 98=28+x x=98-28 x=70 ast+tsb=180(straight angle) 70+y=180 y=180-70 y=110

Ans 2:

Pisal Dhruv from Veer Bhagat Singh International School, Mumbai
Class : Class 7
i agree

Post Your Answer

harnoor from cambridge international school, nawanshahr
Subject :IMO    Class : Class 8

Post Your Answer

Megha Hegde from PSBBLLA, Bengaluru
Subject :IMO    Class : Class 7

Ans 1:

Sriyansh from Surabhi , Hosapete
Class : Class 9
It's simple addition and subtraction. The total cost of both toys is 52.45+25.32=77.77 You gave him a hundred rupee note. So you gave him 22.23 rupees morethe actual prize which you would recieve as change. So the answer is 22.23 (100-77.77=22.23)

Post Your Answer

EKLAVYA GONDULE from DPS BHILAI, Bhilai
Subject :IMO    Class : Class 5

Ans 1:

ARADHYA AGARWAL from NEW ERA PROGRESSIVE SCHOOL, Korba
Class : Class 8
Answer is C

Ans 2:

Niharikaa Pande from BILLABONG HIGH INTERNATIONAL SCHOOL MALAD, Mumbai
Class : Class 6
It is B since GH is not perpendicular by the smallest of angles. EF is perpendicular since if you look at the triangles or 5-sided shapes that are made when lines AB and EF come through a square with an angle not equal to 45 degrees, the sizes are the same. This shows that AB and EF are a pair of perpendicular lines.

Ans 3:

Aditya Sai Kedarisetty from Sri Kumarans childrens Academy DKS, Bangalore
Class : Class 7
This question is itself wrong..

Ans 4:

Sai Lakshmi Rao from Maneckji Cooper Education Trust, Mumbai
Class : Class 4
Wrong options SOF.!!!!!! Do you want us to fail

Ans 5:

Dhrishaj from Kendriya Vidyalay, IISc, Bangalore
Class : Class 6
AND VERY SILLY MISTAKE TOO

Ans 6:

Sof Team from Sof Olympiad Trainer Helpdesk, Bangalore
Class : Class 7
do not worry sof will make the same mistake on paper

Ans 7:

Rushil Arora from DPS, New Delhi
Class : Class 5
the answer should be C

Ans 8:

KRITHYA GUPTA from LOTUS VALLEY INTERNATIONAL SCHOOL, NOIDA
Class : Class 7
it should be C

Ans 9:

Prajwal Thakur from South Point High School, Kolkata
Class : Class 9
The answer should be C

Ans 10:

Kanjani Ghonge from Ira Global School, Dombivli
Class : Class 8

Ans 11:

Dhrishaj from Kendriya Vidyalay, IISc, Bangalore
Class : Class 6
ANS 33 is correct

Ans 12:

Mystic Girl from NPS, Bnagalore
Class : Class 6
How is the answer B?

Ans 13:

Amogha from Hindustan international school, Guindy, Chennai
Class : Class 8
B is the correct answer guys, look at the blocks carefully.

Ans 14:

Suhani Agarwal from St. Mary's ICSE School, Mumbai
Class : Class 8

Ans 15:

Satvik Agrawal from Delhi Public School, bhopal
Class : Class 5
ans 7 is right. perpendicular = 90 degree intersecting straight lines

Ans 16:

Shreejal moharana from DPS Greater Faridabad, Faridabad
Class : Class 8
b is totally correct just see the blocks carefully

Ans 17:

Anirudh Bagri from AMNS, Mumbai
Class : Class 7
question itself is wrong

Ans 18:

Dhrishaj from Kendriya Vidyalay, IISc, Bangalore
Class : Class 6

Ans 19:

dhriti kaintura from Sunrise International School, abu dhabi
Class : Class 6
It is B because the point where EF and AB met it is the centre point of 4 squares making it correct. Guys it is easy but we must know the trick (btw some questions are wrong itself )

Ans 20:

Dhrishaj from Kendriya Vidyalay, IISc, Bangalore
Class : Class 6
WHOEVER HAS STUDIED IN GURRUZI 2024 WOULD KNOW THIS ANSWER BUT THE QUESTION ITSELF IS WRONG IT SHOULD BE WHICH ONE OF FOLLOWING IS (NOT) perpendicular to Ab

Ans 21:

Swarnava Pal from Vivekananda Mission School, Haldia
Class : Class 8
It's cofusing

Ans 22:

Navya from Gyanshree, Noida
Class : Class 6
OMG, the question itself is wrong

Ans 23:

Saanvi Jain from Lotus Valley International School, Noida
Class : Class 5
the answer is d as the line needs to be a proper slant and only i-j is properly slanted

Ans 24:

Yajat Manoj from Vibgyor, Bengaluru
Class : Class 5
right

Ans 25:

Vihaan Nair from Ambassador School, DUBAI
Class : Class 8
Ans is C..... Olympiad Trainer please give master answer or solution.

Ans 26:

prarabdh thakur from podar international school, nashik
Class : Class 6
ans is c

Ans 27:

Jeronee from Christwood School, PERUMBAKKAM
Class : Class 5

Ans 28:

Pulin Sharma from Marble Arch School, Mumbai
Class : Class 6
The answer is C] GH Because if we count the blocks in AB then, it's4 If we count the blocks in GH then, it's4 THIS S MY FORMULAE

Ans 29:

Pratham Dave from GNS, Bangalore
Class : Class 7
Master answer required

Ans 30:

Sunita from Dps, Greater Noida
Class : Class 9

Ans 31:

KRITHYA GUPTA from LOTUS VALLEY INTERNATIONAL SCHOOL, NOIDA
Class : Class 7

Ans 32:

dhriti kaintura from Sunrise International School, abu dhabi
Class : Class 6
we need Sof to clear some of our issues here so SOF pls respond soon

Ans 33:

Rayansh Mishra from VIBGYOR HIGH MAGARPATTA, Pune
Class : Class 9
All transversal lines look perpendicular

Ans 34:

Niharikaa Pande from BILLABONG HIGH INTERNATIONAL SCHOOL MALAD, Mumbai
Class : Class 6

Ans 35:

Sinjini Chakraborti from Indus Valley World School , Kolkata
Class : Class 9

Post Your Answer

NACHIKET KRISHNAN from THE MODERN SCHOOL, FARIDABAD
Subject :IMO    Class : Class 4

Ans 1:

from DAV, Chennai
Class : Class 8
d

Ans 2:

DHRUV.KHOSLA.4.lvisn from Lotus Valley International School Noida, Noida
Class : Class 4
d

Ans 3:

Dheer Pandey from Sentia The Global School, Hyderabad
Class : Class 10
no , its b.

Post Your Answer

Adwait Shiva from Udgam School For Children, Ahemdabad
Subject :IMO    Class : Class 5

Ans 1:

Shreyas Singh from Podar International School, Pune
Class : Class 6

Ans 2:

Ashwak from Cambridge, Jalandhar
Class : Class 9
All figures have perpendicular lines

Ans 3:

NAMAN SINGH from SETH ANANDRAM JAIPURIA SCHOOL, Ghaziabad
Class : Class 8
i also got it wrong

Ans 4:

Clianta Nagi Reddy from Pinnacle High InternationL School, Mumbai
Class : Class 4

Ans 5:

Shamvabi Samanta from Gitanjali Primary School,ICSE, Hyderabad
Class : Class 9
It should be C as it is written that we have to find the perpendicular line for each figure, so there are three figures with perpendicular line but if we consider how many perpendicular lines are there in this picture then it should be 4. This answer is absolutely wrong.

Ans 6:

somesh from Centre point katol road, Nagpur
Class : Class 6
it is d

Ans 7:

Riddhiraj Saha from St. Xeviers Institution , Panihati, Kolkata
Class : Class 8
All 4 figure has perpendicular line along perimeter

Ans 8:

Rimi from TLISK, pune
Class : Class 9
D cannot be the answer at all.

Ans 9:

TRISHA SINGH from St. Joseph Shaktinagar, SONEBHADRA
Class : Class 7
CONFUSING QUESTION

Ans 10:

Ridit Mishra from Narachana Higher Secondary School Sama, Vadodara
Class : Class 10

Ans 11:

Ashwak from Cambridge, Jalandhar
Class : Class 9
But what about the curved arrow

Ans 12:

Pratham Dave from GNS, Bangalore
Class : Class 7
D is the answer to this question because all the lines are perpendicular and in the 3rd one the bottom lines are perpendicular

Ans 13:

Amlan choudhury from GD Birla center for education , Kolkata
Class : Class 7

Ans 14:

Ridit Mishra from Narachana Higher Secondary School Sama, Vadodara
Class : Class 10

Ans 15:

Ayushi Chatterjee from DPS Noida, Noida
Class : Class 5
Angles consideration is confusing ....sometime inner and sometime outer angle is consider ....actually SINGLE LINE FIGURE SHOULD BE GIVEN

Ans 16:

Anika Saha from New Town School, KOLKATA
Class : Class 6
how

Ans 17:

Uzair Khan from Narayan Olympiad School, Chennai
Class : Class 5

Ans 18:

Rohan TR from Sri Aurobindo memorial school, Bangalore
Class : Class 6
It is c

Ans 19:

Aaditya Malhotra from Isaac Newton Global School, Mumbai
Class : Class 3
C

Ans 20:

Anirudh Bagri from AMNS, Mumbai
Class : Class 7
'c' = correct

Ans 21:

Siddarth Rastogi from Greenwood High Int'l School, Bangalore
Class : Class 5
A perpendicular line is 90 degrees, last one doesn't count as 90 degrees, so C

Ans 22:

Harsh Sobti from the samhita academy, BLR
Class : Class 5
it should be a. thats what my supery dupery expert dad said

Ans 23:

Riddhiraj Saha from St. Xeviers Institution , Panihati, Kolkata
Class : Class 8

Ans 24:

prarabdh thakur from podar international school, nashik
Class : Class 6
yes

Ans 25:

Harsh Sobti from the samhita academy, BLR
Class : Class 5

Ans 26:

Soumyaraj Roy from Kendriya Vidyalaya , Thiruvananthapuram
Class : Class 7
Something is wrong here. We have to confirm about it.

Ans 27:

Rayna Agarwal from St. Xaviers High School, Gurgaon
Class : Class 5
The answer should be C because in the first figure there are prependicular lines in the bottom in figure 2 there are prependicular lines all four sides near the arrows and in figure 3 there are prependicular lines at the bottom while there are no prependicular lines in figure 4 as they are all acute and obtuse angles so, the answer should be C not D.

Ans 28:

Riddhiraj Saha from St. Xeviers Institution , Panihati, Kolkata
Class : Class 8

Ans 29:

Arav Jain from Global edge school, Hyderabad
Class : Class 5
How

Ans 30:

prarabdh thakur from podar international school, nashik
Class : Class 6

Post Your Answer

Faraz Khan from Rassaz International, Mumbai
Subject :IMO    Class : Class 6

Ans 1:

Faraz Khan from Rassaz International, Mumbai
Class : Class 6
none of the options are correct

Ans 2:

Agastya Soni from DPS Whitefield, Bengaluru
Class : Class 6
It should be 0.1666731750

Ans 3:

Ashwak from Cambridge, Jalandhar
Class : Class 9
None of the given options is correct .

Ans 4:

Carrie Goyal from OPBMS, Mandi Gobindgarh
Class : Class 7
according to bodmas d option is correct

Ans 5:

Rannvijay Singh from Palms Middle School, LA, Los Angeles
Class : Class 7
none of the options are correct and the solution makes no sense the correct answer is 0.0000515686sof is glitched

Ans 6:

Jaiansh Dabas from St Xaviers High School, Gurgaon
Class : Class 7
I tried it a 1000 times with calculator it is giving 0.0000515686

Ans 7:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
none of the options is correct

Ans 8:

Kumar Krishiv from Apeejay School, Noida
Class : Class 8
None of these are correct I have done in calculator

Ans 9:

Vihaan Binaykia from Riverside, AHMEDABAD
Class : Class 5
Answer given is correct:0.0001289 - (0.0000000274 x 1293) 0.0000419032=(0.0001289 - 0.0000354282) 0.0000419032=0.0000934718 0.0000419032=0.00011353750

Ans 10:

Shreyas K from Kennedy High The Global School, Hyderabad
Class : Class 9
correct answer is 0.0000515686. So, none of the provided options are correct.

Ans 11:

Rannvijay Singh from Palms Middle School, LA, Los Angeles
Class : Class 7

Ans 12:

DIPANWITA MAITI from SPINGDALES SCHOOL PUSA ROAD, New Delhi
Class : Class 9

Ans 13:

Kyra from Accadis international school, Germany
Class : Class 6

Ans 14:

Shourya Kumar from Delhi Public School Noida, Noida
Class : Class 9
it should be 0.166674175

Ans 15:

Parth Kaushish from MDPS, Faridabad
Class : Class 6
the correct answer is going to be 0.0000515686 . I have tried it 10 times. Its given wrong pls correct it SOF

Ans 16:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
Ya Parth Kaushish you are right. Got it Vihaan :) Thanks

Post Your Answer